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ZnS Optical Components | Infrared Windows, Lenses & Custom Fabrication






ZnS Optical Components | IR Windows, Lenses & Custom ZnS Optics Manufacturer
Zinc Sulfide (ZnS) is a classic infrared optical material with outstanding transmittance across mid-wave and long-wave infrared spectra. It features stable physical properties, moderate hardness, good machinability and low thermal distortion. Our factory supplies high-purity ZnS optical blanks, windows, lenses and machined components, supporting single-side / double-side anti-reflection coating and full customization per drawings. Widely deployed in thermal imaging, infrared detection, defense EO/IR systems, industrial monitoring and scientific optical instruments.
Core Advantages
- Broad IR transmission range: covers 3 μm ~ 14 μm, ideal for mainstream infrared working bands
- Good mechanical strength and scratch resistance, suitable for field and harsh working environments
- Easy precision machining, capable of complex shape processing and tight dimensional tolerance
- Low absorption rate and stable optical performance under normal temperature
- Compatible with various infrared anti-reflection coatings to maximize light transmittance
- Strict raw material screening and full inspection, consistent batch quality
Available Products
- ZnS Optical Windows: Round, square, rectangular flat windows; customized aperture & edge treatment
- ZnS Lenses: Plano-convex, double-convex, meniscus and custom infrared lenses
- ZnS Optical Blanks: Unprocessed raw material blocks for secondary machining
- Custom Machined ZnS Parts: Special profiles, grooving, drilling and shaped optical components
Key Technical Specifications
| Item | Parameter |
|---|---|
| Chemical Name | Zinc Sulfide (ZnS) |
| Transmission Range | 3 μm – 14 μm |
| Refractive Index (10 μm) | 2.25 |
| Density | 4.09 g/cm³ |
| Mohs Hardness | 3.0 |
| Coating Option | IR Anti-Reflection Coating (single side / double side) |
| Standard Dimensional Tolerance | ±0.02 mm |
| Surface Quality | Standard optical grade |
| Working Temperature | -40℃ ~ 80℃ (normal environment) |
Main Applications
- Defense & EO/IR Systems
- Thermal Imaging Cameras & Infrared Detection Equipment
- Industrial Temperature Monitoring & Non-contact Measurement
- Aerospace Infrared Optics
- Laboratory Infrared Spectroscopy Instruments
Custom Service
- Custom size, thickness, shape and radius according to CAD drawings / samples
- Professional edge grinding, chamfering and surface finishing
- Custom infrared coating solutions for different spectral requirements
- Small batch trial order and mass production are both acceptable
Call to Action
Product Page Dedicated FAQ
Q1: What is ZnS used for in optics?
Q2: What is the difference between ZnS and ZnSe?
Q3: Can you apply anti-reflection coating on ZnS components?
Q4: What is your minimum order quantity for custom ZnS optics?
Q5: Is ZnS suitable for outdoor long-term use?
Need Custom Optical Glass Solution?
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQCustom Precision Optical & Glass Components Manufacturer – Felix Glass Co., Limited.
We supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.
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- What is your MOQ for custom optical glass and display glass parts?
Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
- Can I get free glass samples for testing before bulk order?
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
- What is the production lead time for custom optical glass components?
What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
- Are your optical glass products ISO, CE and RoHS certified?
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
- Do you offer one-stop custom optical glass processing services?
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.
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